.nav-item:first-child > a {
    color: #fff;
}
.cont{
    width: 990px;
    margin: 0 auto;
}
.k_icon{
    text-align: right;
    width: 855px;
    margin: 20px auto 0;
}
.cont h1 {
    width: 860px;
    margin: 0 auto;
    font: normal 46px/58px "microsoft yahei";
    text-align: center;
}
.cont h2 {
    width: 670px;
    margin: 25px auto 50px;
    text-align: center;
    font: normal 16px/23px "microsoft yahei";
    text-align: center;
}
.cont h3 {
    text-align: center;
    margin-bottom: 15px;
}
.cont h3 span {
    display: inline-block;
    font: normal 30px/52px "microsoft yahei";
    border-top: 5px solid #000;
}
.big_img_box {
    width: 855px;
    margin: 0 auto;
}
.big_img_box div{
    background: url("../img/kdsA_1_01.jpg") no-repeat center top;
    height: 500px;
}
.kds_lf_1 {
    width: 855px;
    overflow: hidden;
    margin: 18px auto;
}
.fl {
    float: left;
}
.fr{
    float: right;
}
.text_box {
    width: 283px;
    border-top: 5px solid #000;
    padding-top: 20px;
}
.text_box h4 {
    font: bold 18px/40px "microsoft yahei";
    border-bottom: 1px solid #000;
}
.text_box p {
    font: normal 12px/20px "宋体";
    padding-top: 10px;
}
.product_about {
    width: 855px;
    margin: 0 auto 50px;
    border-bottom: 1px solid #000;
    overflow: hidden;
    position: relative;
}
.product_title {
    position: relative;
    border-top: 1px solid #000;
    margin: 40px auto 20px;
    width: 855px;
}
.product_title span {
    padding: 10px 20px;
    font: normal 24px/24px "microsoft yahei";
    position: absolute;
    left: 50%;
    margin-left: -71px;
    top: -24px;
    background: #fff;
}
.move_box {
    width: 10000px;
    overflow: hidden;
}
.product_about .move_box dl {
    width: 210px;
    height: 295px;
    display: block;
    float: left;
    margin: 2px;
}
.product_about .move_box dl dd, .productcont dl dt {
    text-align: center;
}
.move_box img{
    width: 210px;
    height: 210px;
}
.move_box a {
    color: #666666;
}
.move_box a:hover{
    color: #9c003f;
}
.product_about .move_box dl dt {
    width: 210px;
    color: #797979;
}
.product_about .move_box dl dt h6 {
    font: bold 12px/32px "Microsoft Yahei";
    width: 200px;
    margin: 0 auto;
    text-align: center;
    overflow: hidden;
    height: 32px;
}
.product_about .move_box dl dt i {
    font: bold 14px/14px "Microsoft Yahei";
    color: #000;
    display: inline-block;
    width: 210px;
    text-align: center;
}
.product_about a.ml, .product_about a.mr {
    position: absolute;
    top: 50%;
    background: url('../img/kdsA_btn.png') no-repeat;
    width: 30px;
    height: 60px;
    margin-top: -30px;
}
.product_about a.ml {
    left: 0;
}
.product_about a.mr {
    right: 0;
    background-position: right 0;
}
.m1 {
    margin-right: 20px;
}
.selfStyle{
    width: 700px;
    text-align: center;
    padding: 50px 0;
    margin:0 auto;
}
.isWidth{
    width:990px;
}
.kds_review {
    width: 855px;
    margin: 0 auto;
}
.kds_review_title {
    background: url("../img/kdsA_btn3.png") no-repeat center top;
    height: 33px;
}
.kds_review_list {
    width: 873px;
}
.kds_review_list dl {
    width: 280px;
    height: 180px;
    overflow: hidden;
    position: relative;
    float: left;
    margin-right: 6px;
}
.kds_review_bk, .kds_review_text {
    width: 280px;
    height: 47px;
    position: absolute;
    bottom: 0;
}
.kds_review_bk {
    background: #000;
    filter: alpha(opacity=70);
    opacity: 0.7;
}
.kds_review_text {
    text-align: center;
    color: #fff;
    font: normal 16px/16px "microsoft yahei";
}